论文部分内容阅读
l洪灾成因分析1998年主汛期6－7月所发生的严重洪涝灾害是由多方面的原因造成的，但最主要的原因是气候异常，降水太多。主要可归纳为以下几个方面。1．l长期气候背景异常1．1．IENSO事件的影响ENSO事件的发生确实是影响全球大气环流和天气气候异常，导致湖南省夏季降水异常和
Causes of floods The serious floods that occurred in June-July of the main flood season in 1998 were caused by many reasons, but the main reason was the abnormal climate and too much precipitation. The main can be summarized as the following aspects. 1. l Long-term climatic background anomalies 1.1. Impact of IENSO events The occurrence of ENSO events does affect global atmospheric circulation and weather anomalies, leading to summer rainfall anomalies in Hunan Province and